I'm having trouble seeing any relationship between my search request and some of the results:
The results are correct as Basic Search looks in footnotes as with 58 in the NAC.
To avoid this change All Text to Surface Text (I get zero results!).
EDIT: I should remember my own earlier finding that in Basic Search NEAR will search in footnotes whilst WITHIN does not! But there's still some results that need explaining eg. WITHIN 10 words finds the same result in RSB as NEAR.
Ah, I didn't see any footnote indicators ... hadn't tried the mouse over.
It's still kind of odd. The Image of God footnote contains a mention of Col 3:10 which is within your verse range, but The Christian Family mentions Col 3:18-21 which does not overlap your range.
The Image of God "footnote" contains the Colossians reference term whilst The Christian Family contains "structure", the other search term.